Top 150+ Solved Design of Machine Elements MCQ Questions Answer
Q. The main reasons for crankshaft wear are
a. different loads at some points of rotation
b. centrifugal forces due to crankshaft rotation
c. misalignment in connecting rod
d. all of the mentioned
Q. The main causes of crankshaft vibration are
a. variation in torque
b. cyclic variation of gas and combustion products
c. unbalanced weight of parts
d. all of the mentioned
Q. In the cam, the distance between the base circle and the nose is called
a. lift
b. lobe
c. flank
d. pitch
Q. The crankshaft rotates the camshaft using
a. belt drive
b. chain drive
c. gear drive
d. motor drive
Q. The crankshaft should be inspected for
a. cracks
b. alignment of crankpins and journals
c. cleanliness of oil gallaries
d. all of the mentioned
Q. Which of the following are functions of bearings?
a. ensure free rotation of shaft with minimum friction
b. holding shaft in a correct position
c. transmit the force of the shaft to the frame
d. all of the listed
Q. A bearing supports the load acting along the axis of the shaft.
a. thrust
b. radial
c. longitudinal
d. transversal
Q. Which of the following are true about plasticity?
a. permanent deformation
b. ability to retain deformation under load or after removal of load
c. plastic deformation is greater than elastic deformation
d. all of the mentioned
Q. Which of the following is measure of stiffness?
a. modulus of elasticity
b. modulus of plasticity
c. resilience
d. toughness
Q. Which of the following facts are true for resilience?
a. ability of material to absorb energy when deformed elastically
b. ability to retain deformation under the application of load or after removal of load
c. ability of material to absorb energy when deformed plastically
d. none of the mentioned